1473results about How to "Reduce maintenance times" patented technology

There is provided an image pickup lens having a 6-element structure which has a small size and a sufficiently lens speed of F/2 or less and in which various aberrations are corrected favorably. This image pickup lens includes a first lens having a positive refractive power and comprising a convex surface directed to the object side; a second lens having a negative refractive power and comprising a concave surface directed to the image side; a third lens having a positive or negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a positive refractive power and comprising a convex surface directed to the image side; and a sixth lens having a negative refractive power and comprising a concave surface directed to the image side, in this order from the object side, wherein the image side surface of the sixth lens has an aspherical shape and an inflection point at a position other than an intersection point with the optical axis, and the image pickup lens satisfies the following conditional expressions.

ν1>50

ν2≦30

where,

• • ν1 is an Abbe number of the first lens, and
  • ν2 is an Abbe number of the second lens.

The invention discloses a laser direct plate marking device for a plane screen print plate and device. The device comprises a screen frame for screen printing, a screen mesh stretched on the screen frame for screen printing, wherein the bottom of the screen mesh is coated with a photosensitive material coating, an optical component arranged below the screen frame for screen printing and used for performing exposure treatment on the photosensitive material coating, a scanning trolley for driving the optical component to reciprocate on the horizontal surface, and a longitudinal moving member for driving the optical component to shuttle on the horizontal surface; and the optical component comprises a plurality of lasers arranged on the same horizontal surfaces, the plurality of lasers are arranged on the same straight line parallel to a longitudinal central line of a rectangular screen frame from front to the back. The method comprises the following steps of confirming a control parameter of a mechanical structure, confirming a control parameter of a laser, and exposure imaging. The device disclosed by the invention is reasonable in design, low in investment cost, simple for use and operation, good in use effect, and wide in application range, and can be used for finishing the print plate manufacturing process of a screen frame in different sizes.

The image forming apparatus includes: an inkjet head of an on-demand ejection type having a nozzle plate in which a nozzle electrode is arranged in a vicinity of a nozzle through which liquid is ejected; and a voltage application device which makes a polarity of the nozzle electrode one of positive and negative in accordance with a start of an ejection operation of the liquid, and then switches the polarity of the nozzle electrode to an opposite polarity to the one of positive and negative in accordance with a timing of ejecting the liquid through the nozzle.

The invention discloses a laser 3D printing device with multiple inkjet heads. The laser 3D printing device with multiple inkjet heads includes a laser generator, a laser inkjet head, a mechanical arm and a working table, wherein the laser inkjet head includes a laser head and a power inkjet head assembly, the power inkjet head assembly comprises a connecting base, a rotating disc and at least two power inkjet heads, the rotating disc is sleeved outside the periphery of the connecting base, the connecting base is provided with a laser through hole which is coaxially communicated with a laser jet hole of the laser head, the at least two power inkjet heads are detachably arranged on the rotating disc and are distributed relative to the periphery of the rotating center of the rotating disc, any power inkjet head is coaxially communicated with the laser jet hole when rotating to a working station, and a fixing unit is arranged between the rotating plate and the connecting base. The laser inkjet head of the laser 3D printing device with the multiple inkjet heads is provided with a plurality of powder inkjet heads and the plurality of powder inkjet heads can be used alternately so that the laser 3D printing device can use a plurality of metal powers to print under the condition that the laser inkjet head is not changed, and the laser 3D printing device meets the 3D printing requirements of FGM (Functionary Gradient Materials) metal pieces.

The invention belongs to the technical field of early warning equipment, and in particular relates to a power transmission line warning ball. The warning ball is made into a spherical shape so as to improve wind proofing capacity thereof, is fixed on a power transmission line and acquires working power supply from the power transmission line to automatically start an LED lamp when the ambient illumination is less than a threshold; an super-bright LED which has high brightness and long service life is adopted; an ultrasonic distance measurement triggering module and a buzzer are arranged in the warning ball; when an object approaches the power transmission line, the warning ball can measure the distance between the object and the wire, send out a sound warning signal within a warning distance and automatically stop when the object gets away from the dangerous region; and the warning ball can realize butt joint with a robot and be installed by using the robot. The warning ball has the advantages of good rain proofing function, good early warning effect, simple structure, convenient installation and long service life.

The invention relates to a high-temperature acid chloride ion corrosion resistant steel plate and a manufacturing method thereof. The high-temperature acid chloride ion corrosion resistant steel plate is prepared from, by mass, 0.01%-0.3% of C, 0.02%-2.0% of Si, 0.1%-2.0% of Mn, 0-0.01% of S, 0-0.05% of P, 0.01%-0.1% of Al, 0.05%-2.0% of Ni, 0.05%-2.0% of Cu, 0.005%-1.0% of Cr, 0.05%-0.3% of Sn, 0.0005%-0.3% of Se, 0.005%-0.2% of Ti, 0.01%-0.1% of V, 0.003%-0.3% of Nb, and the balance Fe and inevitable impurities. The steel plate is excellent in high-temperature acid chloride ion corrosion resistance, and meanwhile the corrosion resistance is little changed along with the temperature of a corrosion medium, so that the service life is prolonged, the safety is improved, and the oil leakage accident is reduced.

The invention relates to the technical field of fire control, in particular to an intelligent fire fighting system based on the extensive electric power internet of things. The intelligent fire fighting system is applicable to an extensive internet of things electric power system comprising a data server. A plurality of fire extinguishing devices used for fire extinguishing and arranged nearby anelectric power building or electric power equipment, a plurality of monitoring sensing devices, a collector, a cloud server and a monitoring terminal are included. The monitoring sensing devices monitor the electric power building fire behavior or the state of the fire extinguishing devices and arranged on the electric power building or the fire extinguishing devices. The collector collects the sensor data and is in communication connection with the monitoring sensing devices. The cloud server analyzes the sensor data, monitors the fire control state of the electric power system and is in communication connection with the collector and the data server. The monitoring terminal displays the fire control state of the electric power system, interacts with a user and is connected with the cloudserver. The intelligent fire fighting system has the substantive effects that the cloud server is used for conducting fire behavior early warning and fire extinguishing strategy and accident reason study and judgment, the advantages of the internet of things are brought into full play, and the fire control level is improved.

Disclosed is a steel-wood composited reinforcement device for ancient wood frames. The steel-wood composited reinforcement device needs not to be fixed with iron cramps or angle steel, horizontal displacement of mortises and tenons can be prevented through wood components, and bending resistance of beams and columns can be improved through steel fasteners. The steel-wood composited reinforcement devcie is high in flexibility, shock resistance and twisting resistance; with the reinforcement technology, maintenance and replacement can be achieved, and protection and renovation of the wood structure is benefited.

The present invention is to provide a hybrid core rope which does not require maintenance or a hybrid core rope capable of reducing a maintenance task. The hybrid core rope includes a resin solid core in which a plurality of spiral grooves is formed in the longitudinal direction on an outer peripheral surface thereof, a plurality of fiber bundles respectively spirally wound around the outer peripheral surface of the resin solid core along the plurality of spiral grooves, the fiber bundles having thickness to fill the spiral grooves, and a plurality of steel strands spirally wound around the outer peripheral surface of the resin solid core around which the fiber bundles are wound. The fiber bundles and the strands are respectively wound so as to have angles which are not parallel to each other.

The invention discloses a manufacture method of an oriented silicon steel, which adopts smelting, continuous casting, heating, rough rolling, finish rolling, normalizing, cold rolling and heat treatment processes. The method is characterized in that continuous bending, continuous straightening, low-head vertical-bending medium-thin slab caster is adopted, the tundish superheat is 15 to 45 DEG C, the drawing speed is 2 to 4 m/min, the temperature gradient of a cast strand is 80 to 200 DEG C/mm, the surface temperature is 850 to 1,150 DEG C, the slab thickness is 100 to 170 mm, the surface charging temperature of a section cast strand and a continuous cast strand is not less than 800 DEG C, and the heating speed is larger than 5 DEG C/min; and a hot coil box is adopted after rough rolling, the cold rolling is achieved by single-frame rolling or multi-frame once or twice cold rolling, the temperature of a steel strip entering a finishing mill is 1,100 to 1,250 DEG C, the output temperature of the finishing mill is larger than 800 DEG C, and laminar cooling is adopted after rolling to reach a final cooling temperature of 400 to 800 DEG C. By controlling the state of a depressant in continuous casting and by adopting high-temperature, short-time and rapid hot rolling process, etc, the invention can achieve uniform product performance, high quality, reduced energy consumption as well as high efficiency.

The invention provides an alloy composition, comprising the following components in percentage by weight: 0.3-0.5% of C, 0.5-0.8% of Si, 0.7-1.3% of Mn, less than or equal to 0.025% of P, less than or equal to 0.025% of S, 1.5-3% of Cr, 0.2-0.4% of Mo, 0.15-0.35% of Ni, 0.005-0.020% of Ti, 0.1-0.35% of Cu, 0.001-0.006% of B, 0.02-0.07% of La, less than or equal to 0.03% of Al and the balance of Fe. The invention further provides a semi-autogenous mill lining plate made of the alloy composition and a manufacturing method of the lining plate. The semi-autogenous mill lining plate disclosed by the invention has excellent mechanical property and good abrasion resistance, so that the overhauling frequency is reduced, repeated work is avoided, the labor intensity is reduced, the service life of equipment is prolonged, and the economic benefit is improved.

The invention discloses an auxiliary brake device applied to a non-drive axle. The auxiliary brake device applied to the non-drive axle comprises an axle shell of the non-drive axle, wherein shaft heads are respectively fixed at two ends of the axle shell, the outer surface of each shaft head is connected with a wheel hub through a bearing, a hydraulic retarder is arranged between the wheel hub and an end portion of each shaft head, each hydraulic retarder comprises a stator impeller fixed on the outer surface of the end portion of each shaft head and a rotor impeller which is covered outside each stator impeller and fixed with the wheel hub, and a hydraulic oil work cavity is formed between the inner surface of each rotor impeller and the outer surface of each stator impeller. An oil inlet pipe and an oil return pipe are arranged on the axle shell, each shaft head is provided with an axial through hole, each axial trough hole forms a part of an oil pipeline passage of each hydraulic retarder, and the oil inlet pipe and the oil return pipe are communicated with the hydraulic oil work cavities through the axial through holes in the shaft heads. The auxiliary brake device applied to the non-drive axle is capable of effectively improving the brake capacity of vehicles, especially a trailer, a semitrailer, a heavy truck and a large bus, and guarantees driving safety.

The invention relates to a sheet material feeding and conveying device. The sheet material feeding and conveying device comprises a rack which is located on the two sides of a conveying production line and provided with stand columns, a lifting machine base is arranged on the lower portion of the rack, a row of transmission rollers used for supporting stacked sheets is arranged on the machine base, sling chains are connected beside the front side and the rear side of the machine base respectively and used for driving the machine base to ascend and descend, the sling chains stride transmission chain wheels on the rack respectively, and a sling sinker used for balancing weight is arranged at the outer side end of each sling chain; the front transmission chain wheel and the rear transmission chain wheel on the same side are driven by a same stepping motor transmission mechanism; the front side and the rear side of the upper portion of the machine base are respectively provided with a lifting sucker used for adsorbing the sheets, the lifting sucker on the front side is connected with a transverse air cylinder connected to the rack so that the lifting sucker on the front side can be driven to move front and back in a reciprocating mode, the front side of the lifting sucker on the front side is provided with a pair of horizontal rollers used for drawing the sheets to move forward, and the output end of each horizontal roller is provided with a sheet conveying device. Not only is the sheet material feeding and conveying device beneficial for guiding a sheet bearing base from the production line, but also lifting control and transmission are convenient and accurate, and feeding is smooth.

The invention discloses a register designing method in an integrated circuit designing process. The register designing method comprises the steps of generating an XML (Xtensible Markup Language) file including register configuration information by an XML editor; according to the type of a register interface included in the register configuration information, obtaining an RTL (Register Transfer Level) template in an RTL template base; according to the obtained RTL template and the register configuration information, generating an RTL file header including the register interface information and the parameter declaration; traversing all the register configuration information included in the XML file to generate RTL information of all the registers; and obtaining an RTL designing file including the RTL file header and the RTL information. According to the register designing method of the invention, the IC (Integrated Circuit) designing defects are reduced, and the designing success rate is increased.

A test pattern is printed for ascertaining ejection characteristics of nozzles arranged in a recording head in an inkjet recording apparatus which forms and records a desired image on a recording medium by performing ejection of droplets of liquid from the nozzles and deposition of the droplets onto the recording medium. Ejection of droplets of the liquid from the recording head is performed by applying, to the recording head, a drive signal having a test waveform in which at least one of a voltage, a frequency and a waveform shape is altered with respect to a drive signal having a recording waveform which is applied to the recording head when the desired image is formed, to thereby perform the ejection with an increased ejection force compared with a case where the drive signal having the recording waveform is applied; and the test pattern is formed by the ejected droplets.

The invention discloses a liftable type water-quality monitoring buoy. The liftable type water-quality monitoring buoy comprises a floating body suspending on an aquaculture water area, wherein the floating body is internally provided with a cavity body; a guiding drum is arranged in the cavity body; the top of the guiding drum is communicated with the cavity body, and the bottom of the guiding drum is communicated with the outside; a water-quality sensor is arranged in the guiding drum; a lifting motor is arranged in the cavity body and is coupled with a connecting mechanism by a lifting shaft; one end of the connecting mechanism is fixedly connected with the lifting shaft, and the other end of the connecting mechanism is connected with the water-quality sensor; the water-quality sensor can move up and down along the inner wall of the guiding drum under the driving of the lifting motor and the connecting mechanism. The liftable type water-quality monitoring buoy disclosed by the invention has the advantages that when not in use, the water-quality sensor is in a dry and cleaner environment, so that the growth of microorganisms adhered on the sensor can not be fast excessively, the loss of pollutants in water to the sensor is reduced, the service life of the sensor is greatly prolonged and the times for periodical cleaning and maintenance are reduced.

The invention discloses a process chamber device and epitaxial equipment with the process chamber device. The process chamber device comprises: a top cap and a bottom cap; an inner quartz tube, which is located between the top cap and the bottom cap and provided with exhaust holes, and defines a process chamber together with the top cap and the bottom cap; a graphite sleeve positioned between the top cap and the bottom cap and sleeved outside the inner quartz tube, with an exhaust path defined between the graphite sleeve and the inner quartz tube, communicated with the outside, and communicated with the process chamber through the exhaust holes; and an outer graphite sleeve positioned between the top cap and the bottom cap and sleeved outside the graphite sleeve, with a cooling channel defined between the outer graphite sleeve and the graphite sleeve and communicated with the outside. According to the process chamber in embodiment of the invention, temperature field distribution in the process chamber can be improved, and ultimately, uniformity of the radial temperature in the process chamber and further in a substrate can be realized. Also, the maintenance frequency and the maintenance cost of the graphite sleeve can be reduced.

The invention discloses a method for manufacturing an anticorrosion steel plate for an upper deck on a crude oil tanker oil cargo tank and the steel plate and belongs to the technical field of steel for a hot-rolling slab ship structure. The steel plate is manufactured through the processes of plate blank heating, plate blanking scale removing, rolling, ACC water cooling and air cooling. The steel plate comprises the following chemical composition, by weight, 0.02%-0.25% of C, 0.05%-0.5% of Si, 0.1%-2.0% of Mn, <=0.025% of P, <=0.01% of S, 0.05%-2% of Cu, 0.05%-2% of Ni, 0.01%-5% of Cr, 0.001%-1% of W, 0.001%-0.1% of Zr, 0.0002%-0.01% of Ca, 0.005%-0.1% of Ti, 0.001%-0.008% of N, 0.020%-0.1% of Als, and the balance Fe and unavoidable impurities. The steel plate has the advantages of being capable of being used directly at an exposed state and obviously reducing the uniform corrosion rate on the upper deck, free of the requirements for coating protection and capable of prolonging service life.